Electric vibrating scraper



April 9, 1940. R. KNABLE Y 2,196,560

ELECTRIC VIBRATING SCRAPER Filed Oct. 25, 1938 5 Sheets-Sheet 1 INVENTOR ATTORNEYS April 9, 1940. R KNABLE y l2,196,560

ELEQTRIC VIBRATING scRAPER Filed'oct. 25, 1938 3 sheets-sheet 2 INVENTOR ATTO R N EYS Ap 9, 1940. R. KNABLE ELECTRIC VIBRAIING SCRAPER 3 Sheets-Sheet 3 `Filed Oct. 25, 1938 ATTORNEYS f body side seam soldering machine wherein novely Patented Apr. .1.940

lassenl y' encased," ELECTRIC- vlimirino.v sonnen. i

Raymond lKnabl'e, Chic ago,-Ill. l Application october 25, 1938,1se`r'ia1 No. .236,951`

y 3 Claims.

My invention relates to'fthe manufacturev of cans and has among its objects and advantages the provision of an improved wiperA scraper.

An object of my invention is to provide a can means are incorporated for wiping solder off the rotary wiper which removes the hot solder from the side seam of the tin can body. 'I'he Wiper comprises a rotary element while ,the scraper embodies a solder removing element oscillated at high speed for wiping the solder off the wiper or buffer. 'I'he scraper is so constructed and arranged as to true the Wiper, while the scraper embodies novel adjusting means for maintaining efficient operating relation-between the 'scraper and the wiper. I arrange the scraper in such relation with respect to the Wiper as to prevent the buffer from throwing or splashing solder inside the can. I y

In the accompanying drawings: Figure 1 is an end view of a can body side seam soldering machine showingmy invention applied thereto.

Figure 2 is a sectional view of Figure 1. l

Figure 3 is a bottom plan view of the scraper mechanism and the mounting therefor. Figure 4 is a sectional view along the line 4-4 of Figure 2. 1 Figure 5 is a sectional rview along of Figure 2. f

Figure 6 is a sectional view along the line 6-6 of Figure 2.

along the line 2- 2 the une 5 5 Figure 7 is a diagrammatic view of the scraper circuit. Y. In vthe embodiment-selected to illustratemy invention, the soldering machine I8 comprises legs I2 interconnected at I4 and provided with hori-Y zontal channels I6 which support a framey I8.

Frame I8 carries a solder horn 28 through which the can 22 is moved throughy the medium of a chain 24. Chain 24 includes n'gers 26 for moving cans through the solder horn.` The solder horn 28 forms no part of the present invention,

is well-known in the artvand need not be defined in'further detail. Figure 1 illustrates the can body 22 as having'a seam 28 located at thebo'ttom of the horn and arranged'to be moved across the rotary wiper v38. During movement of `the can body 22 through the horn 28, a quantity of solder is deposited along the side seam 28 after which the soldered cans are moved through the wiping zone.

Wiper .38 may comprise` cloth" discs or vother suitable material mounted. on-v a drive shafts. 32:

(ci. 51134-97) j and clamped into a'unitary ystruckzture by reason of plates 34. A nut 36 |has threaded relation with the shaft 32 and clamps the elements of the wiper 38 into' connected relation. I rotatably mount the vdrive shaft 32' in bearings`38 mounted on a horizontal reach 48 of abracket 42. 'Shaft 32 is provided with a 'grooved wheel 44 for connection with a' suitable source of Apower (not shown).

Wiper, 38 is curved at 46 to conformgto the curvature of the can body 22. -The scraper 48 comprises Wire bent to provide a bight 58 conforming to the curvaturevllo and so related thereto as to scrape solder from the wiper. Scraper 48 vibrates or oscillates at a rapid speed. Figure 4 illustrates the scraper48 as including-straight reaches 52 extending through bores 54 in trunnions 56. Sets crews 58 are threaded into the trunnions 56 for making the reaches 52 secure. Scraper 48 oscillates about the axis of the `trunnions 56, which trunnions arereduced reaches ofthe shaft 68.` Means for oscillating the scraper 48 comprises an arm 62 having a shank 64 eX- tendin'g through a bore 66 in the shaft 68. 'Ihe shaft is recessed at 68 for accommodating'one end of the arm 62 and at 'I8 for accommodating the nut 'I2 having threaded relationI with 'the l shank 64. Thus the arm 62 is fixedly related to the shaft 68, while'the trunnions 56 arerotatably supported by thrust bearings 14. Bearings 'I4 are mounted within flanges 'ljprojecting inwardly of a housing 'I8 which enclosesthe arm 62. Hous- 4ing 'I8 includes `sidelplates 88 attached tothe Wall S2-by screws 84. lPlates 86 are detachably connected with the flanges 'I6 by screws 88 and are arranged to cooperate `withth'e shoulders 68 on the shaft 68 for holdingthe bearing assemblies in position. I f

Inside the housing 18 I mount coils 82 and 94 for actuating the arm 62. Each coil includes a spool 96 attached to the' wall 82 by screws 68. Arm 62 includes a split 'head |88 recessed at |82 forthe reception of soft iron plates |84 clamped in position by screws |86. Plates |84 are connected into aunitary structure by rivets |88 andv the endsof the plates, which function as a core, are arranged in operative relation with the coils 92 and 94 so as to `impart, oscillatory motionv to thearm`62.

Wall 82 is bored at |I8 and I I2 for the recep tion of sleeves |I4Jand||8,'respectively. These sleeves areformed of insulating material and each includes a flange .H8 made secure to the wall 82 by screws |28.v Sleeves |I4 and |I6 are provided with threaded bores for' the reception of. .screws |22 .each providedwith a headl |24 to fio" facilitate adjustment of the screw. Each screw secure byscrews threaded into the sleeve.y

Screw |22 is provided with a tungsten point |32, while spring contact |28 includes a vv contacting block |34 having pressure relation'with the unthreaded portion of the screw.

A spring contact |38 is attached to the' sleeve 1 I6 by screws |38 and includes a contacting block |40 arranged in pressure relation with the unthreaded portion of the screw |24. This screw includes a tungsten point |42. Upon the arm viii.

I mount a brass bracket |44 which includes arms=` |45 and |48 provided with tungsten points |50- and |52. Point is arranged to contact the point |32 on the screw |22, while point |52 is arranged to contact the kpoint |42 on the screw |24. Figure 4 illustrates an insulated block |54 as being positioned between the b ight of the bracket and the arm 52. Screws |58 attach the block |54to the arm B2, while screws |60 secure the arms |45 and |418 to the block |54. Thesel arms extend across and beyond the armv 62 as indicated at |62 in Figure 4.

' One of the plates 80 is provided with an opening forthe reception of an insulated sleeve |64 including a flange |65 bearing against the outer face oi the wall 80. Screws |58 clamp the flange l5@ to the wall 3|?. Within the sleeve |84 I loosely mount a carbon brush il@ which is urged against the blight |55 by a compression spring |12. Sleeve |04 is threaded for the reception of a screw |14 which has one end abutting the.

spring |72. An electrical conductor |15 is Yconi nected with the screw l'll, whilev the spring |72 is arranged in conducting relation with the screw and the carbon brush lll). Brush H0 is urged into conducting `relation with the bight |58 by reason of the spring |12.

Figure 7 illustrates the electrical circuit for operating the scraper. Wire with a wire llt leading to a source of current.

The second wire |08 which leads to a source'of l current leads to the coil 92, while a wire |82 connects the wire |30 with the coil 04. The wire |84 leading from the coil 82 is electrically connected with the point M2 through `the medium of the spring contact |35, the block |40 and the screw |24 illustrated structurally in Figure 2. The second wire |85 associated .with the coil 92 is electrically related with the pointV |32 through the medium of the spring contact |28, block |34 and screw |22 illustrated structurally inFigure 2.

Figure 2 illustrates the arm 52 as being positioned substantiallyat an angle of 45 to the.

horizontal. Normally the weight of the Karln and the core comprising the `metal plates |04 is such as to bring the point |52 into pressure relation with the point |02. When the `switch |80 is closed the circuitis energized as follows: wire |78, Wire |16, carbon brush |70, point |52, point |42, wire |84, coil S4, wire |82 and wire |30. Energization of the coil all. moves the `arrn 52.

in the direction of the arrow i90. As YthepointA |50 contacts the points |32 the circuit is closed as follows: wire H8, wire H3,y carbon brush l'lil,v point |50, `point |32, wire |85, coil S2., wire' |80. Energization of the coil S2 moves the arm.V 02 in the direction of the .arrow |32 for vagain bringing the point |52' into electrical relation with the point |42.

|78 is connected It will thus be vseen `that, the coils 92 and 94 are y.alternately energized for oscillatingthe arm 62 which -in turnroscilslidably supports a bar |95 having a. right-angular bend |98 provided with a threaded opening for threaded connection with an. adjusting .screw 200.

Screw 200 extends loosely through an opening 202 in a bracket 204 welded to the wall 82 and is provided with collars 206 which cooperate with yopposite faces of the bracket 200 to restrain the screw 200 from relative longitudinal movement. The bight cr curvature 50 of the scraper 48 may be adjusted toward and away from the wiper 30 through the medium of the adjusting screw 200. Thus the scraper may be accurately adjusted 'with respect to the diameter of the wiper. l

Bar |95 includes a righteangular bend 200 which includesa lug 2H) having a threaded bore for threaded connection with an adjusting screw 2li. A bar 2|4 lies adjacent the `right-angular bend 208' andvincludes a right-angular bend 2|@ having an opening for loosely receiving the adjusting screw 2,!2. Collars 2| 8 are mounted on the adjusting screw 2|2 for'restraining the same from relative longitudinal movement. It will thus be seen that bar 2M may be shifted longitudinally of the right-angular bend 208. Bar 2M is slotted at A22E! for the reception of set screws 222 threaded intov the right-angular bend 2M.l Bar 2M may be v:ii-:cured in xed relation to the right-angular bend 258 through tightening of the set screws 222.v A bracket 224 is welded or otherwise secured to the bar 2M and is iXedly connected with the bracket 42 through the medium of a plate 226. Housing 'i8 may be adjusted laterally when viewing Fig.l l through lthe medium of the adjusting screw 212. Such lateral adjustment permits the big'ht or curvature 50 to` be accurately aligned with respect to the curvaturev 48 on the wiper 30.

Between the bracket Zand one of the channels i, I interpose shirns 22S. Bolts 230 extend through the, bracket (42 and the shims 223 and are threaded into` a block 232 slidable in a vertical guide 234 attached to the associated chan nel I6 by bolts 235. It will thus be seen that set screws 238 which s abut the channels I6 to permit adjustment of Vthe frame.v

Housing I3 carries a bar 240 slotted at 242 for the `reception of screws 244 threaded into .the housing. Bar 24|) includes a right-angular bend 246 upon which I adjustably mount a ,cleaning blade 248'f0r the bight .or curvature 50' of the scraper.` Blade 248 includes a plate 250 slotted at 252 for-the reception of screws 254 threaded into the right-angular bend 248. Thus the blade 248 may, be adjusted'toward .or away from the scraper 48 while the ybar 240 "may be adjusted vertical-ly so as to bring 'the blade 248 into proper cleaningy relation withthescraper for removing any solder` which mayadhere thereto. Blade 248;

- y is curved to conform to the curvature of the provided with core means, and electromagnetic' means coacting with said core means for rapidly vibrating the scraper across thev face of said t. wiper.

p 2. In a vmachine for soldering side seams in canv bodies, a rotative wiper having a wiping face fashioned to conform tothe curvature of the can bodyfor'wiping the'seams, a support, a scraper fashioned for wiping solder from` said face of the wiper and journaled for oscillation in' said support, an electrically actuated vibrator i means carried by said support and coacting with said scraper for rapidly oscillating the latter on said face ofthe Wiper to remove solder therefrom, and a vcleaning` means carried by said support and arranged to removeysolder'irom the scraper during oscillation thereof.

- 3. In a machine for soldering seams in can bodies, a rotative wiper for wiping the: seams, a support; a shaft journaled in said support, a scraper xedly connected with" said shaft and arranged to wipe solder from. said wiper, anl arm with core means, and a plurality of alternately and electiically energized *coilv means coactlng with said core means for rapidly oscillating said arm for imparting oscillatory movement to said shaft and the scraper.

`ixedly connected with said shaft and provided RAYMOND KNABLE. 20 

